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Published June 25, 2023 | Published
Journal Article Open

A Simple Cosmology in G4v

Abstract

There has been a great deal of debate as to the role, if any, of Mach's Principle in cosmology. We propose that these questions have meaning only in the context of a cosmic gravitational potential. G4v operates with such a four-potential, which imposes a different symmetry on its treatment of light propagation than that employed by GR. That combination enables a simple cosmic solution that is Lorentz-invariant in free-fall frames of reference. The solution is compared with supernovae data, which, together with an internal self-consistency condition, fixes the parameters of the solution. The resulting Hubble trajectory is, in broad brush, consistent with many cosmic observations.

Additional Information

© 2023 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). (This article belongs to the Special Issue Symmetry in Gravity Research) The author is indebted to many colleagues for enlightening discussions down through the years, and to Donna Fox for preparing the references. Critical comments and suggestions from referees and editors greatly improved the manuscript. This research received no external funding. Data Availability Statement. Union2.1 data are available at https://supernova.lbl.gov/Union/. The author declares no conflict of interest.

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Created:
August 22, 2023
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October 20, 2023